Next is the lateral medullary segment, which extends from the olive to the origins of Cranial Nerves IX, X, and XI.

首先是上位延髓段，它包括了从小脑后下动脉起始处到橄榄体最高突起的连线之间的区域。

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The esophageal lesions in 27 patients with medullary esophageal carcinoma in the middle segment of the esophagus were observed with endoscopy before and after radiotherapy.

对27例中晚期食管癌中段髓质型鳞癌患者进行放疗前后的食管病变疗效观察。

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Method:The medullary blood supply of distal femoral metaphysis was interrupted by clearing out the medulla of supercondylar segment and then filled with wax in 20 rabbits.

方法：以髓腔内髓质刮除、骨蜡填充的方法，将2 0只成年大耳白兔的股骨远端干骺端髓内血供阻断。

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